according to IAU AND NASA, it is. it's just a different classification of planet. And really guys, who here truely doubts that we need a REAL definition of planet? What the IAU is doing is good, it's a bit rusty and will need revisions, but know what? isn't that EVERYTHING in the tech biz? put it out there, then fix it afterwards. Pluto IS a planet, as defined by the National Aerospace and Science Association and the International Astrological Union. look at the list. 12 planets, INCLUDING Pluto. IT'S A PLANET! *no the earth is NOT flat, and zmatt, is there any definitive sources? wikipedia is not really all that trustworthy sorry bro